This book walks you through the key concepts of Domain Driven Design in a practical and easy to grok manner. Examples are well crafted and do not require expertise of F# (I read it with a little knowledge of a similar language, Kotlin). It helped me learn the "why" behind functional patterns.

The journey starts with identifying the Vocabulary for a Domain (ubiquitous language) using Event Storming. Next modeling with Types is covered. Workflows are represented with Functions along with the Types. Second part covers implementation strategies - dependency injection, handling effects with railway oriented programming and so on.